Road-grader.



N0. 808,820. PATENTED JAN. 2, 1906.

' P. B. DREWES.

ROAD GRADBR.

APPLIOATION FILED JUNE 15.1905.

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ROAD-GRADER.

Specification of Letters Patent.

Patented Jan. 2, 1906.

Application filed June 15, 1905. Serial No. 265,346-

To all whom it may concern.-

Be it known that I, FERDINAND B. DREWES, a citizen of the United Statesof America, residing at Granada, in the county of Martin and State ofMinnesota, have invented certain new and useful Improvements in Road-Graders, of which the following is a specification.

This invention relates to road-graders, and particularly to aroad-grader in which a sledding action is aiforded to support the graderwhen in its'operative position or when it is folded for the purpose ofbeing hauled over the road.

An object of this invention is to provide novel means whereby thescraper proper is supported in its inoperative position, yet affordingmeans for readily permitting the said scraper to assume an operativeposition by proper manipulation.

A further object of this invention is to produce a scraper in which thesleds or supports are in such relation to the edge of the scraper thatthe said edge is permitted to swing clear of the roadway while beingchanged from its inoperative position to its operative position, thisbeing accomplished through the relation of the sledding-supports to thecutting edge of the scraper.

Finally, an object of this invention is to provide a road-gradercomprising comparatively few inexpensive parts which will prove strongand durable as well as efficient and satisfactory in use.

l/Vith the foregoing and other objects in view the invention consists inthe details of construction and in the arrangement and combination ofparts to be hereinafter more fully set forth and claimed.

In describing the invention in detail reference will be had to theaccompanying drawings, forming part of this specification, wherein likecharacters denote corresponding parts in both the views, in which-Figure 1 is aview in'perspective, illustrating the scraper in operativeposition. Fig. 2 is a perspective view showing the parts assembled fortransportation with the sled of the scraper proper in engagement withthe ground.

In the drawings, Adenotes a suitable beam which connects the two sidebars B, which form the frame of the scraper. The side bars B terminateat their forward ends in eyes 6, which are provided with rings 5 for theattachment of the source of power, and this may be of any suitable type.The frame is braced at its forward corners by means of the stays O,which have angular ends suitably secured to the side bars and beam. Thesaid bars are provided with the approximately U-shaped runners D, whichare designed for supporting the forward portion of the frame, it beingunderstood that said runners will slide over the ground after the mannerof an ordinary sled.

The rear ends of the side bars B have apertures for the reception of thepivotal bolts E, which are utilized for supporting the crossarms F. itbeing understood that one crossarm is provided for each of the sidebars. When the device is in its operative position, one end of eachcr0ss-armviz., the lower end-is attached to the scraper or scoop G, thesaid arm passing under the bottom of the scraper and being attachedthereto by means of suitable screws or bolts H, thus-insuring a rigidconnection between the cross-arm and scraper.

The upper end of each cross-arm is attached to a runner I, having itsouter end suitably curved to permit the scraper to turn on the pivot ofthe arm to bring it to vits operative position, as shown in Fig. 1, orto its inoperative position, as shown in Fig. 2, where the scraper is inposition to permit the front and rear runners to act as a sled formoving the scraper. The under portion of the scraper is provided withbraces in the form of metallic straps J, suitably secured in place, andthe under surface of the scraper is further provided with drag-bars K,having their ends attached to the under surface of the scraper near itsedge, while the opposite ends extend back of the scraper and form bracesfor the back L. Suitable handles M are secured to the scrapers throughthe medium of the braces N, though the manner of securing these handlesis an immaterial detail.

Secured to the beam A and extending upwardly and rearwardly is an arm 0,on which the hook P is slidable, the said hook extending rearwardly andbeing provided for the purpose of supporting the scraper through themedium of the loop P, attached to the scraper. The scraper may thus beheld in different positions according to the location of the hook P, onthe arm on which it is slidable.

As a means for bracing the scraper I provide the links Q, which havetheir outer ends connected to the pivots E, while their inner ends areattached to the ends of the scraper by any suitable means.

As will be observed, the drag-bars K are spaced a suitable distance fromthe scraper and prevent the under surface of the scraper from contactingwith the ground, thus permitting the said scraper to be operated withless power than if the entire under surface of the scraper were incontact with the ground.

The blade R is attached to the scraper in any suitable manner and ispreferably detachable, although the manner of securing it in place isnot a part of the invention, and the manner of attaching it will not,therefore, be described in detail.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a road-grader, a suitable frame, runners for supporting the frameat the front, a scraper pivotally connected to the rear end of theframe, runners attached to the scraper and adapted to support thescraper when said scraper is inverted.

2. In a road-grader, a suitable frame, runners on the forward end of theframe, a scraper, cross-arms pivotally attached to the rear of theframe, a scraper secured to the lower ends of the arms, links attachedto the scraper and pivotally connected to the pivots of the crossarms,runners attached to the scraper, and to the opposite ends of thecross-arms, and suitable handles for manipulating the scraper.

3. In a road-grader, a suitable frame, runners on the forward end of theframe, crossarms pivotally attached to the rear of the frame, a scraperattached to the ends of the cross-arm,-runners attached to the scraperand extending over the opposite ends of the crossarms, the ends of therunners being curved, whereby the said runners support the scraper inits inverted position.

4. In a road-grader, a suitable frame, runners on the forward end of theframe, crossarms pivotally attached to the rear of the frame, a scraperattached to ends of the crossarms, runners attached to the scraper andeX- tending over the opposite ends of the cross arms, the ends of therunners being curved, whereby the said runners support the scraper inits inverted position, an arm attached to forward end of the frame, anda hook slidable on the arm, and means whereby the hook supports thescraper.

In testimony whereof I affix my signature, in the presence of twowitnesses, this 24th day of May, 1905.

FERDINAND B. DREWES.

Witnesses:

J. E. PALMER, RosA FREY.

